why China called RED CHINA?

Red was used as the color of communist revolution during the collapse of Imperial Russia in the early 1900's. That's why one of the conflicts there happened between the 'White' anti-Bolshevik Russian Army and the 'Red' Communist Army. The background color of the Soviet flag was red, as was the later flag of China under Mao.

Because Red Color stands for aggressiveness and that's what communism upholds to show that they mean everything they say, they follow the rules they have enacted and will implement it to the fullest extent of the law and it shows sincerity to their truest ideals no matter what.In the Philippines,the leftists are the anti-government groups, use red as a symbol of pakikibaka or continuous opposition/refusal to the government.

It's shorter than saying Communist China.

Cause Pink China would sound gay...

Red little devils!!!

Because they kill alot of their innocent civilian countrymen

red is their lucky color.